A photovoltaic tracking system bracket mechanical testing device and method

Abstract

The invention discloses a photovoltaic tracking system support mechanical testing equipment, wherein a mounting seat for mounting a structure to be tested is arranged on a base; a support frame is also arranged on one side of the mounting seat on the base, and a force detection device and a transmission mechanism are arranged on the support frame, wherein the force detection device is used to connect the structure to be tested to detect the tension or torque applied to the structure to be tested; the output end of the transmission mechanism is connected to the force detection device as a whole, and is used to drive the force detection device to move relative to the structure to be tested; a displacement detection device is also connected to the force detection device, and the displacement detection device is used to detect the change in the distance of the force detection device relative to the movement of the structure to be tested; thus, the force detection device is driven by the driving action of the transmission mechanism to move relative to the structure to be tested, so that the tension or torque applied to the structure to be tested changes, and the simulation of the tensile and / or torsional test conditions of the structure to be tested is realized. A corresponding test method is also disclosed. The invention has a simple structure, is convenient for testing, and has accurate measurement results.

Description

Technical Field

[0001] The invention belongs to the technical field of photovoltaic tracking systems, and relates to a photovoltaic tracking system bracket mechanical testing device and method. Background Art

[0002] In the photovoltaic tracking system, in order to optimize the use of sunlight, photovoltaic modules are installed on the bracket, and the tilt angle of the photovoltaic modules is tracked and adjusted according to the change of the sun's irradiation angle. At present, the strength design of the photovoltaic tracking system bracket is closely related to the topography, environment, soil quality and other aspects of the project site. This requires different project sites to have different requirements for the strength design of the key structural nodes of the bracket, which requires a device that can test the mechanical strength of the key structural nodes of the bracket.

[0003] Therefore, it is extremely necessary for those skilled in the art to provide a photovoltaic tracking system bracket mechanical testing device and method that has a simple structure, is convenient for mechanical testing of key structural nodes of the bracket, and has accurate measurement. Summary of the invention

[0004] The purpose of the present invention is to provide a photovoltaic tracking system support mechanical testing device and method that has a simple structure, is convenient for mechanical testing of key structural nodes of the support, and has accurate measurement. Through the testing device and method, different mechanical strengths can be designed for different key structural nodes of the support according to the differences in the project's topography, environment, soil quality, etc.

[0005] The technical solution provided by the present invention is as follows:

[0006] A photovoltaic tracking system support mechanical testing device comprises a base, on which a mounting seat for mounting a structure to be tested is arranged;

[0007] A support frame is also provided on the base at one side of the mounting seat, and a force detection device and a transmission mechanism are provided on the support frame, wherein the force detection device is used to connect to the structure to be tested to detect the tension or torque applied to the structure to be tested; the output end of the transmission mechanism is connected to the force detection device as a whole, and is used to drive the force detection device to move relative to the structure to be tested;

[0008] The force detection device is also connected to a displacement detection device, and the displacement detection device is used to detect the change in the distance of the force detection device relative to the structure to be detected;

[0009] Thus, the force detection device is driven by the driving action of the transmission mechanism to move relative to the structure to be tested, so that the tension or torque on the structure to be tested changes, thereby simulating the tensile and / or torsional test conditions of the structure to be tested.

[0010] Preferably, the transmission mechanism comprises a worm gear transmission unit and a motor arranged on a support frame;

[0011] The worm gear transmission unit includes a first worm gear transmission unit and a second worm gear transmission unit; the first worm gear transmission unit includes a meshing first worm wheel and a first worm, and the second worm gear transmission unit includes a meshing second worm wheel and a second worm; the output end of the motor is drivingly connected to the input end of the first worm, and the output end of the first worm is connected to the input end of the second worm via a connecting shaft; output shafts are arranged in the first worm wheel and the second worm wheel, and a screw segment with an external thread is arranged on the output shaft, the external thread of the screw segment cooperates with the internal thread of the first worm wheel and the second worm wheel, and the output shafts of the first worm wheel and the second worm wheel are rotatably nested in the support frame on one side of the screw segment and are connected to the force detection device;

[0012] Thus, the motor drives the first worm to rotate, thereby driving the first worm wheel and the adjacent second worm and second worm wheel to rotate synchronously. The first worm wheel and the second worm wheel rotate along the screw thread of the screw section on the output shaft, while driving the power detection device to move toward or away from the structure to be tested.

[0013] Furthermore, the force detection device includes a force transmission rod and a force sensor for connecting the structure to be tested; the force sensors are respectively arranged at both ends of the force transmission rod, one at each end, and two in total, and the force sensors at both ends respectively form force detection ends;

[0014] The output shafts in the first worm gear and the second worm gear are integrally connected with the force sensors at both ends on one side of the screw segment in a one-to-one correspondence;

[0015] The two force detection ends on the two force sensors are respectively mounted on the two ends of the force transmission rod to detect the tension or torsion applied to the structural member to be tested.

[0016] Furthermore, a force arm structure is arranged on the top of the structure to be tested, and the force arm structure, the force transmission rod and the force sensor are all parallel to each other;

[0017] The two ends of the force arm structure are used to be connected to the two ends of the force transmission rod on the same side, so that the tension or torque can be loaded or unloaded on the structure to be tested when the motor drives the force detection device to move away from or toward the structure to be tested.

[0018] Furthermore, the two ends of the force arm structure connected to the force transmission rod are flush with each other on the same side;

[0019] The height of the force arm structure is flush with the force transmission rod;

[0020] Therefore, the direction of the pulling force applied to the two ends of the force arm structure is perpendicular to the force transmission rod and the force sensor.

[0021] Furthermore, the force arm structure is directly connected to the same side of the two ends of the force transmission rod that are flush with each other, and is used to test the tensile strength of the structural member to be tested.

[0022] Furthermore, one end of the force arm structure is connected to an end on the same side of the force transfer rod, and the other end of the force arm structure is directed away from the force detection device and is connected to the other force detection end of the force transfer rod via a steering mechanism, thereby achieving consistency in the force direction at both ends of the force arm structure, which is used to test the torsional strength of the structural member to be tested.

[0023] Further, the steering mechanism is configured as a certain pulley;

[0024] The fixed pulley is mounted on the base in a horizontal direction through a fixing frame, and the fixing frame is arranged on a side of the mounting seat away from the supporting frame.

[0025] Furthermore, the displacement detection device comprises a displacement sensor, a retractable end of the displacement sensor is arranged on the force transmission rod, and the other shell end is mounted on the support frame.

[0026] Furthermore, the testing device also includes a control cabinet, and the mechanical sensor, displacement sensor, and motor are all electrically connected to the control cabinet;

[0027] The motor is provided with limit switches at the maximum and minimum angle positions of forward and reverse rotation, and the limit switches are connected to the controller cabinet.

[0028] The present invention utilizes the above photovoltaic tracking system bracket mechanical testing equipment to provide a photovoltaic tracking system bracket mechanical testing method:

[0029] The tensile strength test is carried out using the following steps:

[0030] S1. Install the structure to be tested on the mounting seat of the test equipment; wherein, a force arm structure is designed at the top of the structure to be tested;

[0031] S2, connecting the two ends of the force arm structure to the two ends of the force detection device on the same side;

[0032] S3. Control the motor to rotate forward and reverse, and the transmission mechanism drives the force detection device to move away from or toward the structure to be tested, so as to realize the process of loading or unloading the tension on the structure to be tested; at the same time, the test data of tension and displacement are collected through the force detection device and the displacement detection device, and finally the relationship curve between tension and displacement is obtained to determine whether the tensile strength of the structure can meet the design requirements.

[0033] Alternatively, perform the torsional strength test as follows:

[0034] S1. Install the structure to be tested on the mounting seat of the test equipment; wherein, a force arm structure is designed at the top of the structure to be tested;

[0035] S2, connecting one end of the lever arm structure to an end on the same side of the force detection device, and the other end of the lever arm structure is directed away from the force detection device and connected to the other end of the force detection device after passing through a steering mechanism, so that the force directions of the two ends of the lever arm structure are consistent;

[0036] S3. Control the motor to rotate forward and reverse, and the transmission mechanism drives the force detection device to move away from or toward the structure to be tested, so as to realize the process of loading or unloading torque on the structure to be tested. At the same time, the test data of torque and displacement are collected through the force detection device and the displacement detection device, and finally the relationship curve between torque and displacement is obtained to determine whether the torsional strength of the structure can meet the design requirements.

[0037] The present invention can bring the following beneficial effects:

[0038] 1) In the test equipment and method of the present invention, the force detection device is driven by the driving action of the transmission mechanism to move relative to the structure to be tested. Within the movement range of the force detection device relative to the structure to be tested, the tension or torque applied to the structure to be tested changes. The corresponding force (tension or torque applied) and displacement data within the range of the movement are obtained by the force detection device and the displacement detection device, and finally the relationship curve between tension or torque and displacement can be obtained to determine whether the tensile strength and torsional strength of the structure to be tested can meet the design requirements. Therefore, the test equipment of the present invention is simple and the test process is convenient.

[0039] 2) In the test equipment of the present invention, a force arm structure is installed on the top of the structural part, one end of the force arm structure is directly connected to a force detection end of the force detection device, and the other end is turned to make the force directions of the two ends of the force arm structure consistent. The loading and unloading process of the torque is realized by the forward and reverse rotation of the motor. During the process, the force sensor and the displacement detection device collect test data, and finally the relationship curve between the torque and the displacement is obtained to determine whether the torsional strength of the structural part can meet the design requirements. Therefore, on the basis of a simple structure, the torsional test is realized through the cooperation of the worm gear transmission unit, the force sensor, and the force transmission rod.

[0040] 3) In the test equipment of the present invention, a force arm structure is added to the top of the structure to be tested, the two ends of the structure to be tested are connected to the two ends of the force transmission rod, and the motor is controlled to rotate forward and reverse to realize the process of loading and unloading the tension. During the process, the force sensor can collect the test data of the tension, and the displacement detection device can collect the test data of the displacement. Finally, the relationship curve between tension and displacement can be obtained to determine whether the tensile strength of the structure can meet the design requirements.

[0041] 4) In the testing equipment and method of the present invention, the tension or torque applied to the structure to be tested by the transmission mechanism at both ends of the lever arm structure can simulate the stress conditions of the structure to be tested under strong winds, gusts, etc., so as to make the test data more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural schematic diagram of the testing equipment of the present invention.

[0043] Figure 2 It is a top view of the testing device of the present invention.

[0044] Figure 3 An axonometric diagram of the test equipment of the present invention after the structure to be tested is installed.

[0045] Figure 4 It is an enlarged structural diagram of the transmission mechanism and the force detection device in the present invention.

[0046] Figure 5 The figure is a result diagram of an actual tensile test performed using the testing device of the present invention.

[0047] Figure 6 The figure is a result diagram of an actual torsion test performed using the testing device of the present invention.

[0048] The meanings of the symbols in the figure are:

[0049] 1-base, 10-mounting seat, 11-support frame, 12-fixing frame;

[0050] 2-transmission mechanism, 20-motor, 21-connecting shaft, 22-output shaft;

[0051] 3-force detection device; 4-steering mechanism; 5-arm structure; 6-structure to be tested. DETAILED DESCRIPTION

[0052] The following will be combined with specific embodiments to clearly and completely describe the technical solutions in the present invention. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0053] Example 1

[0054] like Figure 1 , 2 As shown, this embodiment is a photovoltaic tracking system support mechanical testing equipment, including a base 1, on which a mounting seat 10 for mounting a structure 6 to be tested is provided;

[0055] A support frame 11 is also provided on the base 1 at one side of the mounting seat 10, and a force detection device 3 and a transmission mechanism 2 are provided on the support frame 11. The force detection device 3 is used to connect the structure 6 to be tested to detect the tension or torque applied to the structure 6 to be tested; the output end of the transmission mechanism 2 is connected to the force detection device 3 as a whole, and is used to drive the force detection device 3 to move relative to the structure 6 to be tested;

[0056] The force detection device 3 is also connected to a displacement detection device, and the displacement detection device is used to detect the distance change caused by the movement of the force detection device 3 relative to the structure 6 to be detected;

[0057] Thus, the force detection device 3 is driven by the driving action of the transmission mechanism 2 to move relative to the structure 6 to be tested, so that the tension or torque on the structure 6 to be tested changes, thereby simulating the tensile and / or torsional test conditions of the structure 6 to be tested.

[0058] In this embodiment, within the movement stroke of the force detection device relative to the structural member 6 to be tested, the tension or torsional force on the structural member 6 to be tested (such as a column) changes, and the corresponding force (tension or torsional force) and displacement data within the stroke range are obtained by the force detection device and the displacement detection device respectively, and finally a relationship curve between tension or torsional force and displacement can be obtained to determine whether the tensile strength and torsional strength of the structural member 6 to be tested can meet the design requirements.

[0059] Example 2

[0060] like Figure 1 , 2 As shown, this embodiment is a photovoltaic tracking system support mechanical testing equipment, including a base 1, on which a mounting seat 10 for mounting a structure 6 to be tested is provided;

[0061] A support frame 11 is also provided on the base 1 at one side of the mounting seat 10, and a force detection device 3 and a transmission mechanism 2 are provided on the support frame 11. The force detection device 3 is used to connect the structure 6 to be tested to detect the tension applied to the structure 6 to be tested; the output end of the transmission mechanism 2 is connected to the force detection device 3 as a whole, and is used to drive the force detection device 3 to move relative to the structure 6 to be tested; wherein:

[0062] The worm gear transmission unit includes a first worm gear transmission unit and a second worm gear transmission unit; the first worm gear transmission unit includes a meshing first worm wheel and a first worm, and the second worm gear transmission unit includes a meshing second worm wheel and a second worm; the output end of the motor (the motor is preferably a reduction motor) is drivingly connected to the input end of the first worm, and the output end of the first worm is connected to the input end of the second worm through a connecting shaft 21; the first worm wheel and the second worm wheel are both provided with an output shaft 22, and a screw section with an external thread is provided on the output shaft 22, and the external thread of the screw section is threadedly matched with the internal thread of the first worm wheel and the second worm wheel, and the output shafts 22 of the first worm wheel and the second worm wheel are respectively rotatably nested in the support frame 11 on one side of the screw section and connected to the force detection device 3;

[0063] The force detection device 3 is also connected to a displacement detection device, and the displacement detection device is used to detect the distance change caused by the movement of the force detection device relative to the structure 6 to be detected;

[0064] Thus, the motor 20 drives the first worm to rotate and then drives the meshing first worm wheel and the adjacent second worm and second worm wheel to rotate synchronously. The first worm wheel and the second worm wheel rotate along the screw segment thread on the output shaft 22, and then drive the force detection device 3 connected to one side of the screw segment to move toward or away from the structure to be tested 6, so that the tension or torsional force on the structure to be tested 6 changes, thereby realizing the simulation of the tensile and / or torsional test conditions of the structure to be tested 6.

[0065] As a preferred embodiment, Figure 4 As shown, the force detection device 3 includes a force transmission rod 31 and a force sensor 30 for connecting the structure 6 to be tested; the force sensors 30 are respectively arranged at both ends of the force transmission rod 31, one at each end, and two in total, and the force sensors 30 at both ends respectively form force detection ends; the output shafts in the first worm gear and the second worm gear are connected to the force sensors 30 at both ends on one side of the screw segment in a one-to-one correspondence, so that the first worm gear and the second worm gear rotate along the screw segment thread on the output shaft 22 while driving the force sensor 30 and the force transmission rod 31 toward or away from the structure 6 to be tested; the two force detection ends on the two force sensors 30 are respectively mounted on the two ends of the force transmission rod 31, for detecting the tension or torque applied to the structure 6 to be tested.

[0066] In this embodiment, only two sensors need to be set at both ends of the force transmission rod 31, and two force detection ends are formed on both ends of the force transmission rod 31. At the same time, the structure 6 to be tested is connected to the force transmission rod. When the two are driven by the motor and the transmission mechanism, the force sensor 30 first drives the force transmission rod 31, and then the force transmission rod drives the structure 6 to be tested to move. In this process, a tensile force or a torsion force is applied to the structure 6 to be tested, which is convenient for the subsequent tensile strength test or torsion strength test of a certain size structure, thereby reducing the cost under the premise of meeting the test function. Among them, the setting of the transmission rod 31 can keep the force sensors 30 at both ends on the same horizontal plane, improving the balance of force. It should be explained that the force detection end of the force sensor mentioned in this embodiment is also the connection end that transmits the power from the transmission mechanism 2 and the force sensor to the structure 6 to be tested through the force transmission rod 30, thereby applying a tensile force to the structure 6 to be tested and detecting the force value. More specifically, as the motor 20 drives the force detection device 3 to move away from or toward the structure 6 to be tested, the force transmission rod 31 loads or unloads tension on the structure 6 to be tested, and the force transmission rod 31 transmits the tension to the force sensor 30 through the force detection end.

[0067] Better, such as Figure 3 As shown, a force arm structure 5 is arranged on the top of the structure to be measured 6, and the force arm structure 5 is parallel to the force transmission rod 31, the force sensor 30 and the connecting shaft 21; the two ends of the force arm structure are used to be connected to the two ends of the force transmission rod 31 on the same side, so as to load tension or torque on the structure to be measured 6, or unload tension or torque when the motor drives the force detection device to move toward or away from the structure to be measured 6.

[0068] More preferably, the two ends of the force arm structure 5 connected to the force transmission rod 31 are flush on the same side; the height of the force arm structure 5 is flush with the force transmission rod 31; thus, the direction of the pulling force on the two ends of the force arm structure 5 is perpendicular to the force sensor 30.

[0069] This preferred embodiment ensures that the tension data obtained by the test will not be subject to calculation errors due to angle inclination, and is closer to the real data.

[0070] In the above example:

[0071] The arm structure 5 is directly connected to the same side of the two ends of the force transmission rod 31 and is used to test the tensile strength of the structure 6 to be tested.

[0072] Thus, by setting a force arm structure 5 on the structure to be tested, fixing the structure to be tested 6 on the mounting seat 10, using a steel wire rope to connect the two ends of the force arm structure 5 to the two ends of the force transfer rod 31 respectively, and controlling the forward and reverse rotation of the motor, during the process of the motor 20 driving the force detection device 3 to move toward or away from the structure to be tested 6, the force sensor 30 drives the force transfer rod 31 to load or unload tension on the structure to be tested 6, so that the tension test data can be collected, and the displacement detection device collects the displacement test data in the process, and finally the relationship curve between tension and displacement can be obtained to determine whether the tensile strength of the structural component can meet the design requirements.

[0073] or:

[0074] One end of the lever arm structure 5 is connected to an end on the same side of the force transfer rod 31, and the other end of the lever arm structure 5 is connected to the other force detection end of the force transfer rod 31 via a steering mechanism 4 in a direction away from the force detection device 3, so as to achieve consistency in the force direction at both ends of the lever arm structure 5, which is used to test the torsional strength of the structural member 6 to be tested.

[0075] In this embodiment, a lever arm structure 5 is installed on the top of the structural member, one end of the lever arm structure 5 is directly connected to one end of the force transmission rod 31, and the other end is connected to the other end of the force transmission rod 31 after steering, so that when the motor 20 drives the force detection device 3 to move toward or away from the structure 6 to be tested, the force direction at both ends of the lever arm structure 5 is consistent, and the force transmission rod 31 is driven to load or unload torque on the structure 6 to be tested, and the force transmission rod 31 transmits the torque to the force sensor 30, so that the test data of the tension can be collected, and the displacement detection device collects the displacement test data in the process, and finally the relationship curve between torque and displacement is obtained to determine whether the torsional strength of the structural member can meet the design requirements. Among them, the lever arm structure 5 is integrally connected with the structure 6 to be tested, and specifically can be fastened or welded by a bolt group. More preferably, the steering mechanism 4 is set to a certain pulley. Thus, the force direction at both ends of the lever arm structure 6 is consistent by steering the fixed pulley, which is convenient for testing the torsional performance. Specifically, the fixed pulley is mounted on the base 1 in a horizontal direction via a fixing frame 12 , and the fixing frame 12 is disposed on a side of the mounting seat 10 away from the supporting frame 11 .

[0076] In addition, in the tensile or torsional test, the tensile force or torsional force applied to the structural member 6 to be tested by the transmission mechanism 2 is transmitted through the two ends of the lever arm structure 5. The two ends of the lever arm structure 5 are subjected to forces of the same magnitude and direction and transmitted to the structural member to be tested. This can simulate the stress conditions of the structural member to be tested in strong winds, gusts, etc., and is particularly suitable for structural members with a certain size, thereby making the test data more accurate.

[0077] In practical applications, the two ends of the lever arm structure and the two ends of the force transmission rod 31 are connected by steel wires, respectively, for testing the tensile or torsional strength of the tested structure 6. In addition, in order to prevent the steel wires from being offset on the lever arm structure 5 and the force transmission rod 31 and affecting the stability of the linear motion of the force detection device 3 toward or away from the tested structure 6, the steel wires are passed through the two ends of the lever arm structure 5 and the force transmission rod 31 along the same side and in a flush manner.

[0078] Example 3

[0079] Based on Example 1 or Example 2, the displacement detection device 4 is configured as a displacement sensor, and the retractable end of the displacement sensor (not shown in the figure) is arranged on the force detection device 3 (specifically, on the force transmission rod 31), and the other shell end is mounted on the support frame 11.

[0080] Preferably, the test equipment further comprises a control cabinet, and the mechanical sensor, displacement sensor, and motor are all electrically connected to the control cabinet. Preferably, the motor is provided with limit switches at the maximum and minimum angle positions of forward and reverse rotation, and the limit switches are electrically connected to the control cabinet. In practical applications, the model of the limit switch is LSM-11 / RLA. The mechanical sensor adopts a commercially available 10T force sensor. The displacement sensor adopts a Miran KPC series linear displacement sensor.

[0081] Example 4

[0082] Using the testing device of the present invention, the tensile strength test can be carried out by the following steps:

[0083] S1, installing the structure 6 to be tested on the mounting seat 10 of the testing equipment; wherein, a lever arm structure 5 is designed at the top of the structure 6 to be tested;

[0084] S2. Use steel wire ropes to connect the two ends of the arm structure 5 to the two ends of the force transmission rod 31 on the same side;

[0085] S3, control the motor to rotate forward and reverse, and the transmission mechanism 2 drives the force detection device 3 to move away from or toward the structure to be tested 6, so as to realize the process of loading or unloading the tension on the structure to be tested 6; at the same time, the test data of tension and displacement are collected through the force detection device 3 and the displacement detection device, and finally the relationship curve between tension and displacement is obtained, which is used to determine whether the tensile strength of the structure can meet the design requirements.

[0086] Specifically, the tensile test results of the columns are as follows: Figure 5 When the slope of the curve changes, the tensile force corresponding to this point is determined to be the limit value, which is used to determine whether the tensile strength of the structural member can meet the design requirements.

[0087] Using the testing device of the present invention, the torsional strength test can also be performed using the following steps:

[0088] S1, installing the structure 6 to be tested on the mounting seat 10 of the testing equipment; wherein, a lever arm structure 5 is designed at the top of the structure 6 to be tested;

[0089] S2. Use a steel wire rope to connect one end of the arm structure 5 to the end of the force transmission rod 31 on the same side, and the other end of the arm structure 5 is connected to the other end of the force transmission rod 31 after passing through a steering mechanism 4 in a direction away from the force detection device 3, so as to achieve the consistency of the force direction at both ends of the arm structure 5;

[0090] S3, control the motor to rotate forward and reverse, and the transmission mechanism 2 drives the force detection device 3 to move away from or toward the structure to be tested 6, so as to realize the process of loading or unloading torque on the structure to be tested 6. At the same time, the test data of torque and displacement are collected through the force detection device 3 and the displacement detection device, and finally the relationship curve between torque and displacement is obtained, which is used to determine whether the torsional strength of the structure can meet the design requirements.

[0091] Specifically, the torsion test results of the main beam single-side hoop using this test method are as follows: Figure 6 When the slope of the curve changes, the torque corresponding to this point is determined to be the limit value, which is used to determine whether the torsional strength of the structural part can meet the design requirements.

[0092] In the above embodiment, the base 1, the mounting seat 10, the support frame 11 and the fixing frame 12 can be detachably mounted on each other, or can be integrally arranged to form a whole.

[0093] It should be noted that the above embodiments can be freely combined as needed. The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A photovoltaic tracking system bracket mechanical testing equipment, characterized by: It comprises a base, on which a mounting seat for mounting a structure to be tested is arranged; A support frame is also provided on the base at one side of the mounting seat, and a force detection device and a transmission mechanism are provided on the support frame, wherein the force detection device is used to connect to the structure to be tested to detect the tension or torque applied to the structure to be tested; the output end of the transmission mechanism is connected to the force detection device as a whole, and is used to drive the force detection device to move relative to the structure to be tested; The transmission mechanism comprises a worm gear transmission unit and a motor arranged on a support frame; The worm gear transmission unit includes a first worm gear transmission unit and a second worm gear transmission unit; the first worm gear transmission unit includes a meshing first worm wheel and a first worm, and the second worm gear transmission unit includes a meshing second worm wheel and a second worm; the output end of the motor is drivingly connected to the input end of the first worm, and the output end of the first worm is drivingly connected to the input end of the second worm via a connecting shaft; The force detection device comprises a force transmission rod and a force sensor; the two force sensors are respectively arranged at the two ends of the force transmission rod, and the two force sensors respectively form force detection ends; the first worm gear and the second worm gear are respectively connected to the force sensors at the two ends of the force transmission rod in a one-to-one correspondence; A force arm structure is arranged on the top of the structure to be tested, the force arm structure and the force transmission rod and the force sensor are parallel to each other, and two ends of the force arm structure are used to be connected to the two ends of the force transmission rod on the same side; The force detection device is also connected to a displacement detection device, and the displacement detection device is used to detect the change in the distance of the force detection device relative to the structure to be detected; Thus, the force detection device is driven by the driving action of the transmission mechanism to move relative to the structure to be tested, so that the tension or torque on the structure to be tested changes, thereby simulating the tensile and / or torsional test conditions of the structure to be tested.

2. The photovoltaic tracking system support mechanical testing equipment according to claim 1, characterized in that: Output shafts are provided in the first worm gear and the second worm gear, and a screw segment with an external thread is provided on the output shaft, and the external thread of the screw segment cooperates with the internal thread of the first worm gear and the second worm gear. The output shafts of the first worm gear and the second worm gear are rotatably nested in the support frame on one side of the screw segment and are integrally connected with the force sensors at both ends of the force detection device in a one-to-one correspondence; thereby, after the motor drives the first worm to rotate, it drives the first worm gear and the adjacent second worm gear and the second worm gear to rotate synchronously, and the first worm gear and the second worm gear rotate along the thread of the screw segment on the output shaft while driving the force detection device toward or away from the structural part to be measured.

3. The photovoltaic tracking system support mechanical testing equipment according to claim 2, characterized in that: The two ends of the force arm structure connected to the force transmission rod are flush with each other on the same side; The height of the force arm structure is flush with the force transmission rod; Therefore, the direction of the pulling force applied to the two ends of the force arm structure is perpendicular to the force transmission rod and the force sensor.

4. The photovoltaic tracking system support mechanical testing equipment according to claim 3 is characterized by: The arm structure is directly connected to the same side of the two ends of the force transmission rod, and is used to test the tensile strength of the structure to be tested; or, One end of the force arm structure is connected to an end on the same side of the force transmission rod, and the other end of the force arm structure is directed away from the force detection device and is connected to the other force detection end of the force transmission rod via a steering mechanism, so as to achieve consistency in the force direction at both ends of the force arm structure, which is used to test the torsional strength of the structural member to be tested.

5. The photovoltaic tracking system support mechanical testing equipment according to claim 4, characterized in that: The steering mechanism is set as a certain pulley; The fixed pulley is mounted on the base in a horizontal direction through a fixing frame, and the fixing frame is arranged on a side of the mounting seat away from the supporting frame.

6. The photovoltaic tracking system support mechanical testing equipment according to claim 2, characterized in that: The displacement detection device comprises a displacement sensor, a telescopic end of which is arranged on a force transmission rod, and the other shell end of which is mounted on a support frame.

7. The photovoltaic tracking system support mechanical testing equipment according to claim 6, characterized in that: The test equipment also includes a control cabinet, and the force sensor, displacement sensor, and motor are all electrically connected to the control cabinet; The motor is provided with limit switches at the maximum and minimum rotation angle positions of forward and reverse rotation, and the limit switches are connected to the controller cabinet.

8. A photovoltaic tracking system support mechanical testing method, using the photovoltaic tracking system support mechanical testing equipment according to any one of claims 1 to 7, characterized in that: The tensile strength test is carried out using the following steps: S1. Install the structure to be tested on the mounting seat of the test equipment; wherein, a force arm structure is designed at the top of the structure to be tested; S2, connecting the two ends of the force arm structure to the two ends of the force detection device on the same side; S3, control the motor to rotate forward and reverse, and the transmission mechanism drives the force detection device to move away from or toward the structure to be tested, so as to realize the process of loading or unloading the tensile force on the structure to be tested; at the same time, the force detection device and the displacement detection device are used to collect the test data of the tensile force and the displacement, and finally obtain the relationship curve between the tensile force and the displacement, which is used to determine whether the tensile strength of the structure can meet the design requirements; Alternatively, perform the torsional strength test as follows: S1. Install the structure to be tested on the mounting seat of the test equipment; wherein, a force arm structure is designed at the top of the structure to be tested; S2, connecting one end of the lever arm structure to an end on the same side of the force detection device, and the other end of the lever arm structure is directed away from the force detection device and connected to the other end of the force detection device after passing through a steering mechanism, so that the force directions of the two ends of the lever arm structure are consistent; S3. Control the motor to rotate forward and reverse, and the transmission mechanism drives the force detection device to move away from or toward the structure to be tested, so as to realize the process of loading or unloading torque on the structure to be tested. At the same time, the test data of torque and displacement are collected through the force detection device and the displacement detection device, and finally the relationship curve between torque and displacement is obtained to determine whether the torsional strength of the structure can meet the design requirements.

Images